Tefal 2940 Turbo Pro Express Review

I have owned a Tefal steam iron for 18 months but have not used it for 6 months as it emits ateam from the base of the steam generating unit and has on three occasions given a huge bang, sounding like water and electric contacting. I thought the unit had shorted out but it still functioned. I have no wish to use a unit that I feel is unsafe. I am expected to ship the unit to a repair centre in Birmingham. Very inconvenient and expensive.